【題目】Doing exercise is good ________ us.

A. at B. on C. in D. for

【答案】D

【解析】

句意:做運動對于我們來說是有好處的。at在具體時間或地點;on上面;關于;in里面;for對于,因為。這句話中使用了固定短語be good for…有好處。故應選D。

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